| Influence of slag on mechanical and durability properties of fly ash-based geopolymer concrete |
Ramamohana Reddy Bellum1
, Karthikeyan Muniraj1, Sri Rama Chand Madduru2 |
1Department of Civil Engineering, Vignan’s Foundation for Science, Technology and Research (Deemed To Be University), Vadlamudi, Guntur‑522213, A.P., India
2Department of Civil Engineering, Sree Chaitanya College of Engineering, Karimnagar, T.S, India |
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Received: February 3, 2020; Revised: April 28, 2020 Accepted: May 6, 2020. Published online: September 30, 2020. |
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| ABSTRACT |
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A geopolymer binder is measured as an alternative and elective material to customary Portland binders. Utilization of Fly ash (FA) as a primary binding material limits the waste creation of thermal power stations and reduces environmental impacts. This paper presents the strength performance of geopolymer concrete (GC) with different proportions of FA and ground granulated blast furnace slag. The potential of GC against acid resistance, porosity, water absorption, and sorptivity is presented in this paper. Apart from this, rapid chloride penetration test was performed to assess the chloride resistance of GC. XRD and SEM analysis was done on selected samples of GC to categorize microstructural performance. The results depicted that mixes M5 and M10 have attained higher compressive strengths, i.e., 49.0 and 57.6 MPa, while the acid durability loss factor values are less by 28% and 19%, respectively compared to other mixes of GC. |
| Key words:
Fly ash · Ground granulated blast furnace slag · Geopolymer concrete · Ambient curing · Mechanical properties · Durability |
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